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Working during the extraordinary time of a COVID-19 pandemic

Written by Mukundan Thelakkat

Our research group has adapted to the constraints of the COVID-19 pandemic and all research students and Masters have returned stepwise and are working now regularly in the lab. Some are finishing their pending papers or thesis. We also have regular research seminars and literature discussion meetings in Zoom/Skype every week. I take this opportunity to thank all my group members for having the patience and understanding the situation and managing things efficiently in an extraordinary time. We hope to sit together and discuss things in person soon. We also wish all our research partners within and outside Germany healthy days, weeks and months.

Jannik Petry, Adrian Hochgesang and Andreas Erhardt join as PhD students

Written by Mukundan Thelakkat

Jannik (Batteries), Adrian (Perovskites and EIS) and Andreas (Block copolymers and Alignment) finished their Master thesis and joined as new PhDs in 2020 to strenghen the activities of AFUPO family. Congrats and looking forward towards new impulses and ideas!

Dominic and Alexander publish a joint paper in Electrochimica Acta on extended DRT analysis of SPEs

Written by Mukundan Thelakkat

In a joint research work within BayBATT, we published detailed DRT analysis of Nyquist plots obtained from Electrochemical Impedance Spectroscopy of solid electrolytes to understand the bulk as well as interface impedance as a function of the nature of electrolytes varying from single-ion conductor polymer to polymer bottle brushes and ceramic electrolytes, all of which are interesting candidates for a solvent-free Li-metal anode battery

Mahima published a perspectives in Macromolecules on Polymer Thermoelectrics

Written by Mukundan Thelakkat

In a perspective article in Macromolecules, the challenges and opportunities of polymeric thermoelectrics for medium temperature and low power regime applications are reviewed. The main focus lies in the interconnectivities of the important TE parameters, Seebeck coefficient, thermal conductivity as well as electrical conductivity and how to improve both S and sigma simultaneously. A paradigm shift towards efficient doping at low dopant levels and separation of transport and fermi energy levels are strongly recommended.

Philip published two important papers for his cumlative PhD disertation

Written by Mukundan Thelakkat

Philip Schmode studied the concept of copolymerization as well as polar polythiophenes carrying oligoethyleneglycol substituents to obtain Ionic Electronic Mixed Conductors for applications in Organic Electrochemical Transistors. The corelation between chemical structures, volumetric capacitance, charge carrier mobility and µC* product are evluated in two papers published in Chem. Mater. (2019) and ACS AMI (2020).

Our postdoc Dr. David Heinrich left the group

Written by Mukundan Thelakkat

After a very long stay in AFUPO, David left the group end of December 2019. We wish him all the best in both private and professional lives.

SolTech seminar, "Soltech meets Industry" was organized in Nürnberg Maritim Hotel on 12.02.2020

Written by Mukundan Thelakkat

About 75 participants from SolTech and 6 representatives of industry took part in a one-day seminar at Maritim Hotel, Nürnberg

Harimohan joined the battery crew to strengthen the cathode research

Written by Mukundan Thelakkat

Mr. Harimohan Erabhoina joined AFUPO to work on new combinations of cathodes and solid polymer electrolytes, which will strengthen our battery research. Harimohan  has submitted his PhD thesis to NIT Warangal, India after working 4 years in the field of Li-S batteries and has developed many concepts to stabilize such a battery and to reduce the Li-polysulfide dissolution. He also developed high capacity anodes such as tin/graphene and silicon/graphite composites as an alternative anode to lithium metal.

Organic electrochemical transistors based on tunable conjugated copolymers

Written by Mukundan Thelakkat

In a conjugated gradient copolymer combining the hydrophilic ionic conductor PTHS and hydrophobic electronic conductor P3HT in different compositions, the water compatibility, swelling, Volume Capacitance and OECT-mobility could be varied and optimized to obtain high performance OECTS. See Chem. Mater. 2019

Sequentially co-clicked single ion Li+ conductor for batteries

Written by Mukundan Thelakkat

In an elegant approach of clicking multifunctionalities, Alexander demonstrates the utility and power of such an approach to create "custom-made" solid polymer electrolyte materials with single Li-ion conducting properties. The Poly(glycidyl propargyl ether) backbone itself offers Li-ion coordinating EO groups in addition to the OEG side chains clicked to it.